Hello everyone and welcome back to Scary Interesting. In this video, we're going to go over

three more of the worst disasters in history. Frustratingly, as is too often the case,

two of these seem to have been entirely preventable if not for a series of mistakes made by

the people involved. Then, in contrast, the first story required a once-in-a-lifetime natural event to occur for

what eventually transpired.

But either way, in each of them, the effects were beyond devastating.

As always, viewer discretion is advised. Not far north of the border between Montana and Alberta, Canada, sits the tiny, unassuming

town of Frank.

It's hard to imagine when looking at it today that it was once a bustling mine town with a population

of almost 1,200 people about 120 years ago.

Only about 150 people remain there today, and to understand why it is, we first have

to start more than 300 million years ago.

It all began when Frank and much of what is now North America sat beneath the ocean, which

was home to a variety of sea creatures with shells made of calcium carbonate.

As those animals died and drifted to the bottom, all that calcium carbonate in the ocean floor built up and compressed into limestone over time.

Then, as the ocean receded, it revealed a valley full of rivers and deltas surrounding what would become frank a few hundred million years later.

The growth and death cycle of vegetation over millions of years continued to compress the organic material and about a hundred

six million years later the ground was rich with coal. Then after another 70 million

years or so the tectonic plates in the air began to press against each other and

caused the earth to rise forming what are now known as the Rocky Mountains.

Part of that chain in measuring

2,200 meters or 7,250 feet above the valley is a peak called Turtle Mountain. As

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